I also had never heard before that couples were encouraged to give up sex simply because they were aging. I can understand if there are health issues or mutual lack of interest/desire, but if both spouses are still interested, I don’t see why they should be expected to stop having sex. That doesn’t make sense to me.
A married couple should never be “encouraged” to give up sex without a genuine need to do so. Marital sex was created to be important in uniting a couple to each other and with God. A marriage is not just 2 persons, it’s three - husband, wife, and God. The couple does not need to sacrifice the marital embrace to embrace God more fully. If anything the marital embrace allows them to more fully embrace God.
This is also not something a couple “grows out of”. That is a huge myth. Yes, some couples do reach a point where their health becomes a barrier in some way or another, but that is not a choice on the couples part. The sexual side of their relationship does change, but outside of health, there is rarely a couple that chooses to just never do it again.
**Menopause does not mean a woman never wants sex again either. Many women actually say they were surprised at wanting it MORE. **